KR102253959B1 - Telescopic extension pipe containing electric wire - Google Patents

Abstract

Disclosed is a wire-embedded telescopic extension tube. The disclosed wire-embedded telescopic extension tube comprises: an outer tube; an inner tube; a wire channel; and a locking bunch. The inner tube is adjustable in length by being moveable inside the outer tube, is formed in a circular tube shape, and integrally forms a combination protrusion on the outer circumferential surface along a longitudinal direction. The wire channel forms a space in which a straight unit of a wire unit is mounted inside, forms a plurality of combination groove units inserted and combined with the combination protrusion at a predetermined interval along a longitudinal direction, allows the combination groove units to be combined with the outer circumferential surface of the inner tube and to be moved inside the outer tube with the inner tube, and forms a plurality of fixing grooves along a longitudinal direction on an upper surface. When the locking bunch is locked to the fixing groove by being installed in a back end unit of the outer tube, the locking bunch maintains a length adjusting state by being fixed to the outer tube and the inner tube. Since a pair of wire fixing ribs are integrally formed along a longitudinal direction on a lower surface of the wire channel, the straight line unit of the wire unit is inserted and fixed between the pair of wire fixing ribs. The present invention can improve productivity.

Description

Built-in telescopic extension pipe {TELESCOPIC EXTENSION PIPE CONTAINING ELECTRIC WIRE}

The present invention relates to a telescopic extension tube with a built-in electric wire for use in a vacuum cleaner, and more particularly, to a telescopic extension tube with a built-in electric wire for supplying power to a brush assembly in which dust is sucked from the vacuum cleaner body. About.

In general, a vacuum cleaner connects a cleaning body provided with a suction source and a suction member that sucks foreign substances to be cleaned, such as dust, through a telescopic extension tube and a flexible hose. However, in recent years, as cleaner performance is improved, a technology for mounting a driving unit such as a motor in a suction member and increasing cleaning efficiency by using the power of the driving unit has been proposed.

In order to supply power from the cleaning body to the suction member, the vacuum cleaner is configured such that a wire for electrically connecting the cleaning body and the suction member is embedded in the telescopic extension pipe.

It is disclosed in Patent Registration No. 10-2065775 for such a wire-embedded telescopic extension tube.

The telescopic extension tube with a built-in wire disclosed in Registration Patent No. 10-2065775 has an external appearance; An inner tube that is movably inserted into the exterior (3) and has a plurality of pitch grooves formed in the longitudinal direction on the outer circumferential surface; And a locking bundle that is installed to penetrate the wall of the exterior and locks the exterior and the inner tube to be fixed to each other when caught in the pitch groove, wherein the inner tube comprises a main tube forming an air passage in the longitudinal direction. : And a sub-pipe separated from the main pipe by a divider and forming an electric wire passage in the longitudinal direction, so that the electric wire from the cleaner body to the suction member is always in a double-layered pipe structure, regardless of the state of expansion and contraction of the inner and outer pipes. Since it passes through the inner tube, it is possible to simplify the shape of the inner and outer tube in which the electric wire is embedded, and thus, the aesthetics and athletic functionality of the inner and outer tube can be improved, and furthermore, failure or damage can be reduced to make the maintenance of the new tube more efficient. It is structured to be able to.

However, since the telescopic extension tube with a built-in wire disclosed in Patent Registration No. 10-2065775 consists of a two-layered tube structure in which the main tube and the auxiliary tube are integrally formed with each other, when the inner tube is composed of metal material to emphasize the refinement, the entire inner tube It is not only difficult to realize weight reduction because it is made of metal material, and the wire only passes through the sub-pipe, but cannot restrict the movement of the wire, so that the wire is easily separated from the terminal part at the rear end of the extension tube, and accordingly, the driving part of the suction member There was a problem that the power was not supplied to the device and thus it became inoperable.

In addition, Patent Registration No. 10-2065775 has a problem in that the front end of the electric wire extension part is not stably fixed to the terminal block installed at the end of the extension tube, and thus it is easily separated from the terminal block, so that the power supply to the driving part of the suction member is not made stably. .

In addition, Patent Registration No. 10-2065775 has an upper edge formed on the stopper cap finished at the tip of the inner tube in order to stop the exterior without further advancing from the inner tube in the unfolded position of the inner tube. A locking protrusion is formed on the bottom of the button bracket so that the locking protrusion is caught on the upper edge of the stopper cap, but in this case, if the user applies additional external force from the position where the exterior is removed from the inner tube to the maximum, the stopper cap can be easily moved from As it was separated, the inner tube and the exterior were completely separated, and there was a problem that the extension tube could easily break down.

Registered Patent No. 10-2065775

The present invention has been devised to solve the conventional problems as described above, and is configured to directly fix the wire channel to the outer circumferential surface of the circular inner tube, so that the inner tube and the wire channel can be made of different materials, thereby reducing weight compared to the conventional one. In addition to realizing, it provides a built-in telescopic extension tube with an improved structure to improve the life of the device through improved durability of the device by suppressing the separation of the wire from the terminal so that the movement of the wire inside the wire channel can be restricted. There is a purpose to do it.

In addition, the present invention allows the wire channel firmly fixed to the outer circumferential surface of the inner tube to be caught by the locking protrusion of the inner tube even if a separate stopper cap is not installed at the tip of the inner tube, so that the exterior is removed from the inner tube to the maximum by additional external force. Another object is to provide a telescopic extension tube with a built-in electric wire having an improved structure to prevent it from being completely separated from the inner tube.

In addition, the present invention is an improved wire-embedded type to enable a stable supply of power by preventing the wire from being separated from the terminal block installed at the front end of the wire by easily and firmly fixing the tip of the extension part of the wire to the inner tip of the exterior. Another purpose is to provide telescopic extension tubes.

Wire-embedded telescopic extension tube of the present invention for achieving the above object, the exterior; An inner tube that is movable inside the exterior and is configured to be length adjustable, has a circular tube shape, and has a coupling protrusion integrally formed along the longitudinal direction on the outer circumferential surface; A space in which the straight part of the electric wire part is built inside is formed, and a plurality of coupling grooves that are fitted with the coupling protrusion are formed at predetermined intervals along the longitudinal direction, and are coupled to the outer circumferential surface of the inner tube so that they are moved inside the exterior together with the inner tube. It is configured, the wire channel is formed in a plurality of fixing grooves along the longitudinal direction on the upper surface; When installed at the rear end of the exterior and caught in the fixing groove, it is configured to include a locking bundle that fixes the exterior and the inner tube to maintain a length-adjusted state, and a pair of wires along the length direction on the lower surface of the wire channel It is characterized in that the fixing rib is integrally formed and mounted so that the straight portion of the wire portion is fitted and fixed between the pair of wire fixing ribs.

The inner tube may be made of an aluminum metal tube material, and the wire channel may be made of a plastic injection product.

The coupling groove may be integrally formed at predetermined intervals along the pair of wire fixing ribs.

A locking protrusion is formed protruding from the bottom surface of the locking bundle, and when an external force to be additionally extended is generated on the upper surface of the front end of the electric wire channel while the outer tube and the inner tube are fully elongated, the outer tube and the outer tube are separated by the locking protrusion. A stopper that prevents it from being formed may be integrally formed.

The wire part may include a straight part accommodated in the wire channel and connected to a pin terminal provided at a rear end of the inner tube; Includes; an extension part connected to the front end of the straight portion, formed in a coil shape, arranged in an upper space inside the exterior, connected to a terminal block installed at the front end of the exterior, and changed in length according to the length adjustment of the exterior and the inner tube; Can be configured to

The front end cap installed at the front end of the exterior is fitted with a connection pipe for connection with the vacuum cleaner assembly to be fixedly installed, and the terminal block is fixedly installed on the upper end of the end cap to electrically connect the front end of the extension and the brush assembly. And the terminal block includes: a socket insertion portion into which a socket terminal is inserted; A seating groove formed integrally with the rear end of the socket terminal and into which the front end of the expansion and contraction portion is inserted and seated; A cover portion provided with a folding portion integrally connected to a side surface of the seating groove portion and coupled to cover an open lower portion of the seating groove portion by folding of the folding portion; When the cover portion is integrally protruded to cover the seating groove portion, when the cover portion is coupled to cover the seating groove portion, a pressing member for pressing and fixing the front end portion of the elastic portion seated in the seating groove portion may be configured to include.

According to the above, the telescopic extension tube with a built-in wire of the present invention, the inner tube is made of a circular tube made of aluminum, and is configured to have a coupling protrusion on the outer circumferential surface, and the wire channel is made of plastic molded material, and is combined along the length direction. With a plurality of coupling grooves fitted into the protrusions, the aluminum inner tube and the electric wire channel, which are extruded products, can be easily assembled and separated from each other. It is not formed integrally and is not made of a complicated structure, and the shape of the inner tube made of aluminum is more simple to make, and it is easy to manufacture and can increase productivity, and there is an effect of realizing lighter weight by combining the electric wire channel, which is an extruded product, to the simpler inner tube. .

In particular, the present invention is a structure in which the open lower part of the wire channel is not combined with a separate cover, but the wire channel with the open lower part is easily directly connected to the outer circumferential surface of the inner tube, so that manufacturing is easy and the productivity can be further improved. There is.

In particular, in the present invention, the straight part of the wire is fitted and fixed to a pair of wire fixing ribs formed inside the wire channel to perform repetitive appearance and length adjustment of the inner tube, or the movement of the straight part in the wire channel is restricted even by external impact. As a result, electric short-circuit of the straight part is prevented, so that stable power supply can be made even for long use, and the life of the device is improved.

In addition, the present invention does not require configuring a stopper cap at the tip of the inner tube to prevent separation by additional external force at the maximum elongation of the inner tube and the exterior, as before, because the stopper is configured on the top surface of the tip of the electric wire channel, which is an extruded product. Compared to this, it is possible to reliably prevent device failures such as separation of the inner tube and the exterior, while still simplifying the overall structure.

In addition, the present invention has a structure in which the terminal block can be easily assembled while fixing the tip of the wire expansion and contraction more stably and firmly, so that it is easy to manufacture and prevents the separation of the terminal block from the wire, thereby providing a stable power supply. There is an effect that can extend the lifespan.

1 is a perspective view showing a state in which the telescopic extension tube with a built-in wire according to an embodiment of the present invention is maximally removed,
Figure 2 is a perspective view showing a state viewed from the opposite direction of the extension pipe of Figure 1,
Figure 3 is an exploded perspective view of a part of the configuration of the extension pipe of the present invention,
Figure 4 is a cross-sectional view of the extension tube of Figure 1,
5 is a cross-sectional view showing the extension tube of FIG. 1 along VV,
FIG. 6 is a partial perspective view showing the separated inner tube, electric wire, and electric wire channel from the extension tube of FIG. 1,
FIG. 7 is an exploded perspective view showing a partial configuration of the inner tube, the electric wire, and the electric wire channel of FIG. 6 as viewed from above,
8 is a perspective view showing a specific configuration of the terminal block of the present invention,
9 is a cross-sectional view of the terminal block of FIG. 8,
10 is a longitudinal sectional view showing a coupling structure of the terminal block of FIG. 8 and the front end portion of the wire expansion and contraction portion.

The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when a component is referred to as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed therebetween. In addition, in the drawings, the thickness of the components is exaggerated for effective description of the technical content.

Embodiments described in the present specification will be described with reference to cross-sectional views and/or plan views, which are ideal exemplary diagrams of the present invention. In the drawings, thicknesses of films and regions are exaggerated for effective description of technical content. Therefore, the shape of the exemplary diagram may be modified by manufacturing technology and/or tolerance. Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include a change in form generated according to a manufacturing process. For example, an etched area shown at a right angle may be rounded or may have a shape having a predetermined curvature. Accordingly, the regions illustrated in the drawings have properties, and the shapes of the regions illustrated in the drawings are for illustrating a specific shape of the region of the device and are not intended to limit the scope of the invention. In various embodiments of the present specification, terms such as first and second are used to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. The embodiments described and illustrated herein also include complementary embodiments thereof.

The terms used in this specification are for describing exemplary embodiments, and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other components.

In describing the specific embodiments below, a number of specific contents have been prepared to more specifically describe the invention and to aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific contents. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not largely related to the invention are not described in order to prevent confusion without any reason in describing the invention.

Hereinafter, with reference to the accompanying drawings, a built-in wire telescopic extension tube according to an embodiment of the present invention will be described.

1 to 4, the telescopic extension tube 1 of the present invention is configured to include an exterior 110, an inner tube 120, an electric wire channel 130, an electric wire 140, and a locking bundle 150. .

The exterior 110 is configured to be adjustable in length by inserting the inner tube 120 into the rear side, and the front end cap 113 is inserted and installed at the front end of the exterior 110, and the rear end cap 117 is inserted at the rear end. Is installed.

At the front end of the exterior 110, a connection pipe 112 for connection with the brush assembly is fitted and fixed to the inner and lower portions of the tip closing cap 113, and the wire portion 140 and the upper end of the tip closing cap 113 A terminal block 160 for electrically connecting the brush assembly is fitted and fixedly installed.

In addition, the inside of the exterior 110 is configured with a flow path connector 111 installed so that the front end is connected to the connection pipe 112, and the rear end of the flow path connector 111 is inserted into the inner tube 120 to be inserted into the inner tube ( It is configured to be able to move relative to the inner circumferential surface of 120). A sealing material is formed at the rear end of the flow path connector 111, and the flow path connector 111 and the inner tube 120 are sealed to improve suction efficiency.

The inner tube 120 is a tube whose rear end is connected to the main body of the vacuum cleaner, and in the case of a canister type cleaner, a handle part connected to the flexible hose is connected, and in the case of a handheld wireless cleaner, it may be configured to be directly connected to the vacuum cleaner main body.

The inner pipe 120 is connected to the connection pipe 112 through a flow path connection pipe 111, and a pipe guide 124 for connection with a handle part connected to a flexible hose or a main body of a vacuum cleaner is configured at the rear end. At this time, two pin terminals 143 for applying power supplied from the main body of the vacuum cleaner to the extension pipe 1 of the present invention are provided above the rear end of the pipe guide 124. That is, when a vacuum cleaner main body (wireless cleaner type) or a vacuum cleaner handle (canisert type) is connected to the pipe guide 124, the power supply terminal provided in the main body or the handle is at the upper end of the rear end of the pipe guide 124. The provided two pin terminals 143 may be connected to be configured to supply power.

The inner tube 120 is inserted into the outer side of the outer tube 110 and is configured to slide in the longitudinal direction, so that the extension tube 1 is elongated or stretched to adjust the length, so that the outer tube 120 is replaced with the inner tube 120 as shown in FIG. 1. ), the length of the inner tube 120 may be drawn in to the outer tube 110, and the length may be reduced.

The inner tube 120 is made of a lightweight metal tube such as aluminum, and may be manufactured by adjusting the material thickness and the tube diameter through a drawing process.

5 to 7, in the present invention, the inner tube 120 is formed in a circular tube shape, and a pair of coupling protrusions 122 are formed to be spaced apart from each other integrally along the longitudinal direction at the top of the outer circumferential surface.

The wire channel 130 is coupled to the inner tube 120 along the longitudinal direction and is configured to be interlocked with the inner tube 120, and is inserted into the interior of the outer tube 130 together with the inner tube 120 to be movable.

The wire channel 130 is made of an injection product of a synthetic resin material such as plastic, and is coupled along the longitudinal direction to the upper end of the outer peripheral surface of the inner tube 120 to protect the straight portion 141 of the electric wire 140, which will be described later, from the outside. As a configuration to be configured, the wire channel 130 may have a groove with a cross section open toward the lower side, that is, as shown in FIG. 5, and may be formed in a “c” shape that is gradually opened toward the lower side. However, the cross-sectional shape of the wire channel 130 is not limited to a "c" shape that opens downward, and a groove is formed to accommodate the straight part 141 of the wire part 140 therein, Of course, it may be formed in a simple "C" shape or in a curved arch shape.

A plurality of fixing grooves 131 are formed at predetermined intervals along the length direction on the upper surface of the wire channel 130, and when the locking bundle 150 is operated to be caught in any one of the plurality of fixing grooves 131, The outer tube 110 and the inner tube 120 are fixed to each other so that the length-adjusted state can be maintained.

In addition, a pair of wire fixing ribs 134 are integrally extended at predetermined intervals along the longitudinal direction of the front and rear at the center of the lower surface of the wire channel 130, and the space between the pair of wire fixing ribs 134 is provided with an electric wire part. As the straight part 141 of 140 is inserted and fixed in a force-fitting form, the straight part 141 of the wire part 140 is limited in movement, so that the wire and the wire and the wire and the inner tube 120 are frequently stretched and contracted. It prevents disconnection of the terminal from occurring.

In addition, a plurality of coupling grooves 135 are integrally configured at predetermined intervals along a pair of wire fixing ribs 134, and the coupling protrusions 122 of the inner tube 120 snap to the plurality of defect grooves 135 By being inserted and coupled in a manner, the inner tube 120 and the wire channel 130 are coupled to each other.

5, when the coupling protrusion 122 of the inner pipe 120 is coupled to the coupling groove 135 of the wire channel 130, both lower ends of the wire channel 130 are in close contact with the outer circumferential surface of the inner pipe 120. It is configured to be in a state.

The wire part 140 is configured to include a straight part 141 and a coil-type expansion and contraction part 144, and the coil-type expansion and contraction part 144 is connected to the front of the straight part 141. It is configured to be embedded in a fixed form between a pair of wire fixing ribs 134, and the rear end 142 of the straight portion 141 is split into two strands, and a pin terminal 143 configured at the rear end of the pipe guide 124 ) Is configured to be connected. This pin terminal 143 functions as a terminal to which power is applied from the main body of the vacuum cleaner when the vacuum cleaner is used.

In addition, the expansion and contraction part 144 is connected to the front end of the straight part 141 and is accommodated in the upper space inside the exterior 110, and is configured to be disposed on the outer circumferential surface of the flow path connector 111, and the expansion and contraction part 144 The front end 146 of the is divided into two and is configured to be connected to the terminal block 160 configured on the upper end of the exterior 110, and this terminal block 160 is a brush when the connection pipe 112 is connected to the brush assembly. Electrical connection terminals of the assembly are connected to electrically connect the electric wire 140 and the brush assembly.

When the length of the extension tube 1 is extended by drawing the inner tube 120 from the exterior 110, the extension part 144 of the electric wire 140 is increased, and the inner tube 120 is inserted into the exterior 110 to extend the tube When the length of (1) is reduced, the extension part 144 of the electric wire part 140 is relatively shortened.

The locking bundle 150 is a means for locking or unlocking the elongated or contracted state of the exterior 110 and the inner tube 120, and the exterior 110 through the exposed hole 115 formed on the upper surface of the rear end of the exterior 110 ), a button bracket 151 formed to protrude from the upper surface of the rear end of the exterior 110, and is installed to cover the button bracket 151, and can slide back and forth with respect to the button bracket 151 The slide button 153 is configured to be inserted between the button bracket 151 and the slide button 153 to be inserted into the button bracket 151 to return the slide button 153 to its original position when the slide button 153 is moved back and forth. The return spring 154 penetrates through the button bracket 151 and protrudes toward the wire channel 130, and is configured to include a fastener 155 that is selectively inserted and seated in the fixing groove 131a of the wire channel 130. do.

The button bracket 151 inserts the exposed hole 115 of the exterior 115 from the inside to the outside while being supported on the upper surface of the extension part 117a of the rear end cap 117 that is fitted and coupled to the rear end of the exterior 110 Thus, the upper portion may be configured to protrude above the rear end portion of the exterior 115.

In addition, a through hole 152 is formed in the front and rear of the button bracket 151 through which the fastener 155 passes, and an incision groove 117aa is formed in the extension portion 117a of the rear end cap 117 to penetrate through The fastener 155 passing through the hole 152 may pass through the cutout groove 117aa to be inserted and seated in the fixing groove 131a.

On the lower surface of the slide button 153, a movement limiting protrusion 153 is formed in an intermediate position in front and rear, and when the locking member 155 is seated and caught in the fixing groove 131, the movement limiting protrusion 153 presses the locking member 155 By preventing the upward movement of the fastener 155, it is configured to fix the exterior 110 and the wire channel 130 to maintain the adjusted length of the exterior 110 and the inner tube 120.

On the other hand, when the user pushes the slide button 153 forward or backward, the movement limiting protrusion 153 is separated from the upper end of the fastener 155, and then pushes or pulls the exterior 110 from the inner tube 120, the fixing groove The inclined surface 131a of the 131 pushes up the inclined surface 155a at the bottom of the lock 155, so that the lock 155 comes out of the fixing groove 131, and the lock 155 is caught in the fixing groove 131 This may be released, and thereafter, the length of the outer tube 110 and the inner tube 120 may be adjusted by continuously pulling or retracting the inner tube 120 from the outer tube 110.

In addition, when the external force on the slide button 153 is removed when adjusting the length of the outer tube 110 and the inner tube 120, the fixing groove at the position where the length of the stop tab 155 is adjusted by the elastic force of the return spring 154 ( 131), and as the slide button 153 returns to its original position, the lower portion of the movement limiting protrusion 153 of the slide button 153 is again positioned at the top of the fastener 155 inserted into the fixing groove 131 and locked. By limiting the upward movement of the iron 155, it is possible to maintain the fixed state of the length of the outer tube 110 and the inner tube.

In the present invention, the inner tube 120 is made of a circular tube made of aluminum, and is configured to have a coupling protrusion 122 on the outer circumferential surface, and the wire channel 130 is made of a plastic injection product, and the coupling protrusion along the longitudinal direction It is provided with a plurality of coupling grooves 135 that are fitted to 122, so that the inner tube 120 and the wire channel 130 can be easily separated during assembly and maintenance, as well as the inner tube ( While simply configuring the shape of 120) and reducing the volume, it is possible to embed the wire part 140 by assembling only the wire channel 130 on the upper end of the inner tube 120, thereby implementing an ultra-lightweight extension tube.

In particular, in the present invention, a pair of wire fixing ribs 122 are formed on the inside of the wire channel 130, and the straight portion 141 of the wire part 140 is fitted between the wire fixing ribs 122. By being installed as, the straight part 141 does not move within the wire channel 130 and the movement is restricted even by performing the length adjustment operation of the repetitive exterior 110 and the inner tube 120 or by an external shock, and thus the straight part 141 ) And the pin terminal 143 may not be separated, a stable power supply may be achieved, and the life of the device may be improved.

On the other hand, the present invention is configured such that the stopper 139 protrudes from the top surface of the front end of the wire channel 130 as shown in FIGS. 6 and 7, and the locking protrusion 151a is formed on the lower surface of the button bracket 151, After adjusting the length of the 110 and the inner tube 120 to the maximum elongation state, even if an external force to additionally increase the outer tube 110 and the inner tube 120 is applied, the locking protrusion 151a is caught on the stopper 139 so that the inner tube ( 120) and the exterior 110 can be prevented from being separated.

At this time, in the present invention, since the stopper 139 is integrally formed on the top surface of the front end of the wire channel 130, even if an additional external force is applied to the outer tube 110 and the inner tube 120 in a state of maximum elongation, the wire channel 130 Since it is impossible to separate the inner tube 120 in the axial direction, the separation of the inner tube 120 and the exterior 110 may be further prevented.

That is, in the present invention, a plurality of coupling protrusions 122 are formed along the longitudinal direction on the lower surface of the wire channel 130, and the plurality of coupling protrusions 122 are formed on the inner tube 120 along the longitudinal direction ( 122 is fitted and coupled to the inner tube 120 and the wire channel 130, which is a structure in which the inner tube 120 and the wire channel 130 can be separated in the vertical direction, but the inner tube 120 Since it is very difficult to separate the electric wire channel 130 in the axial direction, after adjusting the length of the outer tube 110 and the inner tube 120 to the maximum elongation state, an external force to additionally increase the outer tube 110 and the inner tube 120 Even if the locking protrusion 151a formed on the lower surface of the button bracket 151 pulls the stopper 139 integrally formed on the top surface of the front end of the wire channel 130, the wire channel 130 is separated from the inner tube 120 It is not possible to reliably prevent the inner tube 120 and the exterior 110 from being separated.

This can further prevent separation of the inner tube and the exterior compared to a conventional method in which a stopper cap is formed at the front end of the inner tube so that the locking protrusion formed on the bottom surface of the button bracket is caught on the stopper cap.

In addition, referring to FIGS. 3 and 8 to 10, the terminal block 160 of the present invention easily couples the distal end 146 of the wire expansion and contraction unit 144 while being firmly coupled to the electric wire 140 and the terminal. It is configured to prevent power supply failure due to separation as well as assembly of the block 160.

The terminal block 160 is integrally formed at the rear end of the socket insertion portion 162 and the socket insertion hole 162a in which the socket terminal 163 is inserted into the front end portion 162, and the wire expansion and contraction portion The front end portion 146 of 144 is connected to the seating groove 161 in which the groove 161a is inserted and seated, and integrally connected to the side surface of the seating groove 161 by a foldable part 164a, and a foldable part 164a The cover portion 164 coupled with the seating groove portion 161 to cover the open lower portion of the seating groove portion 161 by the point force of the cover portion 164 and the cover portion 164 is formed protruding from the cover portion 164 to cover the seating groove portion 161 ) In the coupled state to cover, it is configured to include a pressing member 166 for pressing and fixing the front end 146 of the elastic portion 144 seated in the seating groove 161.

When the terminal block 160 and the wire portion 140 are coupled, the end of the front end portion 146 of the expansion and contraction portion 144 is electrically connected to the socket terminal 163, and then the socket terminal 163 is inserted into the socket insertion portion ( 162), the distal end portion 146 is arranged to be seated in the groove 161a of the seating groove portion 161, and then the folded portion 164a is folded as shown in FIG. 10(b) so that the cover portion 164 Covers the groove (161a) of the seating groove (161), and the hook (164b) provided in the cover portion (164) is hooked to the locking projection (161b) formed in the seating groove (161), in this case, the cover portion The pressing member 166 formed in the 164 presses the tip 146 of the expansion and contraction 144 seated in the groove 161a of the receiving groove 161 to press the tip 146 of the expansion and contraction 144 May be firmly fixed to the terminal block 160.

Meanwhile, referring to FIG. 2, in the present invention, a guide rail groove 132 is formed along the length direction in the middle of the upper surface width direction of the wire channel 130, and this guide rail groove 132 is a plurality of fixing grooves 131 ) Is configured to pass. That is, the guide rail groove 132 is configured to be formed along the length direction in the middle of the upper surface width direction of the wire channel 130 so as to pass through the plurality of fixing grooves 131.

In addition, the rear end cap 117 has an inner tube 120 and an entry hole 117b for entering the wire channel 130 coupled to the upper end of the inner tube 120 into the exterior 110, A guide protrusion 117ba is formed at the upper end of the entry hole 117b to guide the front and rear movement of the wire channel 130 by being inserted into the guide rail groove 132.

Therefore, when the inner tube 120 and the wire channel 130 are brought in or out of the exterior 110, the guide rail groove 132 is guided to the guide protrusion 117ba, so that the stable front and rear sliding movement of the inner tube 120 is possible. Can be done.

As described above, the present invention has been illustrated and described in connection with preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the configuration and operation as shown and described as such. Rather, it will be well understood by those skilled in the art that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate changes and modifications and equivalents should be considered to be within the scope of the present invention.

110...Appearance
111...Euro connector
112... connection pipe
113... end cap
117... rear end cap
120...introspection
122...combination protrusion
130...wire channels
131...Fixed groove
132...guide rail groove
134...wire fixing ribs
135...combination groove
139...stopper
140...electrical part
141...straight part
144...extension part
150...lock bundle
151...button bracket
153...slide button
154...return spring
155...lock
160...terminal block
161...seat groove
162...Socket insert
164...cover
166...pressurizing member

Claims (6)

Exterior 110;
An inner tube 120 that is movable inside the exterior and configured to be length-adjustable, has a circular tube shape, and integrally formed with a coupling protrusion 122 along the longitudinal direction on the outer circumferential surface;
A space in which the straight portion 141 of the electric wire portion 140 is embedded is formed, and a plurality of coupling grooves 135 fitted with the coupling protrusion 122 are formed at predetermined intervals along the length direction, and the inner tube A wire channel 130 coupled to an outer circumferential surface to move inside the exterior together with the inner tube, and having a plurality of fixing grooves formed along the longitudinal direction on the upper surface;
It is installed at the rear end of the exterior and, when caught in the fixing groove, a locking bundle 150 for fixing the exterior and the inner tube to maintain the length adjustment state; and configured to include,
A pair of wire fixing ribs 134 are integrally formed on the lower surface of the wire channel and mounted so that the straight portion of the wire portion is inserted and fixed between the pair of wire fixing ribs,
The wire part 140,
A straight portion 141 accommodated in the wire channel 130 and connected to a pin terminal provided at a rear end of the inner tube;
An extension part that is connected to the front end of the straight part, is formed in a coil shape, is arranged in the upper space inside the exterior, is connected to the terminal block 160 installed at the tip of the exterior, and changes in length according to the length adjustment of the exterior and the inner tube (144); includes,
A connection pipe for connection with the vacuum cleaner assembly is inserted and fixedly installed in the tip finishing cap installed at the tip of the exterior,
The terminal block is fixedly installed on the top of the tip end cap and configured to electrically connect the tip end of the elastic part and the brush assembly,
The terminal block 160,
A socket insertion part 162 into which a socket terminal is inserted;
A seating groove portion 161 formed integrally with the rear end of the socket terminal and into which the front end portion of the expansion and contraction portion is inserted and seated;
A cover portion (164) having a folding portion integrally connected to a side surface of the seating groove portion and coupled to cover the open lower portion of the seating groove portion by the folding portion of the folding portion;
Characterized in that it comprises a pressing member (166) which is integrally protruding from the cover portion and when the cover portion is coupled to cover the seating groove portion, pressing and fixing the distal end portion of the elastic portion seated in the seating groove portion. Telescopic extension tube with built-in wire.
The method of claim 1,
The inner tube 120 is made of an aluminum metal tube material, and the wire channel is a built-in wire telescopic extension tube, characterized in that the plastic injection product.
The method of claim 1,
The coupling groove 135 is a wire-embedded telescopic extension tube, characterized in that integrally formed at predetermined intervals along the pair of wire fixing ribs (134).
The method of claim 1,
The locking protrusion (151a) is protruding from the bottom of the locking bundle (150),
A stopper that prevents separation of the outer tube from the outer tube by being caught by the locking protrusion 151a when an external force to be additionally extended is generated on the top surface of the front end of the wire channel 130 (139) a telescopic extension tube with a built-in wire, characterized in that the integrally formed.
delete delete

Images